Means for connecting circuit-wires to electric motors.



A. L. GOLDSGHMIDT.

MEANS FOR CONNECTING CIRCUIT WIRES T0 ELECTRIC MOTORS.

APPLICATION FILED AUG. 30, 1906.

918,844, Patented Apr. 20, 1909.

I a 6 0 d) fig Z 9 f [329.

W" tmeooao V D ran;

ADOLPH L. GOLDSOHMIDT, OF NEW YORK, N. Y.

MEANS FOR CONNECTING CIRCUIT-WEBES T0 ELEGTRIG MOTORS.

Specification of Letters Patent.

Application filed August 30, 1998.

Patented April 20, 1909.

Serial No. 882,535

To all whom it mo concern:

Be it known t at I, ADOLPH L. GOLD- scHMID'r, a citizen of the United States, residing at the city of New York, in'the county of New York and State of New York, have invented certain new and useful Improvements in Means for Connecting Circuit- .'Wires to Electric Motors, of which the following is a full, clear, and exact description.

In connecting up the circuit wires with motors and other electrical devices, it is a common practice to cut away or terminate the conduit for the wires at a oint adjacent to the ceiling of the room, an then lead the wires downwardly beyond the end of the conduit to the binding posts or terminals on the motor. In so doing, the wires are left exposed throughout a considerable len th, and are not only in the way, but are also iable to have the insulation stri ped therefrom by objects striking against them, and to be disconnected from the binding posts of the motor from the blows and strains to which they are subjected. This is extremely objectionable, not only on account of the danger, but on account of the trouble and inconvenience caused.

The purpose of my invention is to provide means whereby the circuit wires may be completely covered and protected down to their points of connection with the terminals of the motor, and in such a way that any l blows or strains to which said wires might otherwise be subjected cannot be transmitvided with a bushing 10 having a central opening 1 l therein slightly smaller in diameted to the terminals with the result of disconnecting the wires therefrom.

It is also a purpose of my invention to provide, in connection with the means for completely covering and protecting the circuit wires, means for shielding and protecting the binding posts on the motor.

in carrying out my invention, 1 extend the conduit down to a point adjacent to the circuit terminals on the motor and firmly secure the same at its free end to the motor casing.

The details of the invention will hereinafter appear and that which I regard as new will be set forth in the claim.

In the drawings forming part of this speci- 1 duit and Fig. 4 is a detail view showing a modification of the invention.

Like reference numerals indicate like parts in the different views.

The casing 1 of the motor is provided with the binding posts 2, which, as usual, are mounted upon an insulating base or block 3. The conduit 4 through which the circuit wires ass is provided with a downwardly exten ing leg or member 5 which extends down to a oint adjacent to the binding posts 2, the lbwer' end thereof terminating a short distance above said binding posts.

6 is a shield which is secured to the lower end of the vertical conduit member 5 and is itself secured to the casing 1 of the motor. In the form of my invention shown in Figs. 1 and 2 of the drawing, the shield 6 constitutes a housing for the binding posts 2, the same when in place completely inclosing said binding posts. The upper end of said shield or housing is provided with'a contractible sleeve 61' collar 7 through which the conduit 'member 5 passes, the said collar, with the bolt 8 which extends through lateral ears thereon, constituting a clamp by means of which said shield is secured to said conduit member. provided with flanges 9 through which screws or other attaching means may be passed for securing the shield to the motor casing.

The lower endof the conduit member 5 has been shown as screw-threa .lcd and protcr than the diameter of the assage through the conduitmember 5. T e walls of the opening 11 are rounded, as shown, the purpose of the said bushing being to protect the wires passing through the conduit from the bur 12 which is formed at the end of the conduit section.

In using my improved device the circuit wires 13 are extended down through the c0nduit member 5 and the insulation removed from those portions thereof which pro'ect beyond the end of said conduit mem er. The shield 6 is raised to the )osition in which it is shown in Fig. 2 of the d covering the binding posts 2 and the projecting ends of the wires 13 and permitting of the ready connection of said wires with said binding posts.

The lower end of said shield is rawim thus un- When these connections have been made, the shield 6 is moved down 1 10 wardly to the position shown in Fig. 1 of the drawing and screwed to the motor casing, as

shown. The nut on the bolt 8 is then I screwed up and the conduit member 5 is locked to the shield 6, and through said shield to the motor casing 1. The circuit wires are then completely inclosed by the conduit member 5 in the room in which the motor is located, and are also completely protected against blows and strains which would tend to remove the insulation from said' wires and .to separate or disconnect said wires from the binding posts 2. N o movement whatever of said wires is permitted independent of the motor and of the conduit through which the wires pass. At the same time the binding posts 2 are completely protected by the shield 6.

\Vhile my invention has been illustrated and described as specially intended for use in connectiohwith an electric motor, it will be obvious that it is not limited to this par- I ticular use. Where the terms motor and motor casingare used in the followingclaim, therefore, it will be understood that they comprehend in the one case any other l electrical device which has circuit terminals used for external wires, and in the other any other fixed support.

Havin described in r invention l clui1u imity, but not, into engagement with, said device, electrical conductors extending from said device through said conduit pipe, and a shield cooperating with said pipe and said device to completely inclose said conductors adjacent to sald device, said shield being secured to said conduit pipe and to said device to constitute the sole medium of resistance against all strains therebetween and preclude swaying or independent movement of the conduit pipe, whereby the conductors can be exposed for connection and are normally protected against damage.

In witness whereof, I subscribe my signature, in the presence of two witnesses.

ADOLPH L. GOliDSCl-IMIDT.

Witnesses:

WM; M. S'rooKBRmeE, E. L. BOWERS. 

